Reprinted with permission of the American Entomological Society from:
LaBerge, W. E., Ribble, D. W. 1972. A revision of the bees of the genus Andrena of the Western Hemisphere. Part V: Gonandrena, Geissandrena, Parandrena, Pelicandrena. Transactions of the American Entomological Society 98: 271-358.
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This is a small, relatively poorly known species related to A. integra. The female of persimulata can be distinguished from that of integra by the presence of long barbed mesoscutal hairs and from any other Gonandrena female by the pronounced, rounded protuberance on the mesepisternum just above and in front of the midcoxa. The male of persimulata is difficult to identify. It differs from males of fragilis by the distinct sternal fimbriae, from the male of integra by the more pronounced clypeal punctures and from the males of nigrifrons and integra by the pronounced, dish-shaped emargination of the clypeus.
FEMALE. MEASUREMENTS AND RATIOS: N = 20; length, 8-9 mm; width, 2.5-3.0 mm; wing length, M = 3.48 ± 0.096 mm; FL/FW, M = 1.01 ± 0.004; FOVL/POVW, M = 4.26 ± 0.069.
INTEGUMENTAL COLOR. — As in fragilis but flagellum dark brown to black below and wing veins red, membranes moderately infumate, yellowish-brown.
STRUCTURE. — Antennae as in fragilis. Eyes each three and one-half times as long as broad or slightly longer, inner margins parallel. Mandible and galea as in fragilis but galea somewhat duller. Labral palpus as in fragilis but ratio about as 1.0:0.5:0.5:0.8. Maxillary palpus as in fragilis but ratio about as 1.0:1.0:0.9:0.7:0.6:0.7. Labral process and labrum as in platyparia. Clypeus rounded from side to side but usually slightly flattened medially near apical margin, with small round punctures separated mostly by one to two punctures widths except sparser medially but without a distinct impunctate midline area, surface opaque, dulled by dense regular tessellation. Supraclypeal area and face above antennal fossae as in fragilis. Vertex as in fragilis but shorter, above lateral ocellus equal to slightly less than one ocellar diameter. Facial fovea as in fragilis. Genal area broad as in fragilis, posterior carina weak or absent, usually absent in lower half, surface dulled by fine reticular shagreening.
Pronotum, mesoscutum, scutellum and propodeum as in fragilis. Mesepisternum with large rounded protuberance just above and in front of mid-coxa (similar to integra but more protuberant and rounded, rather than longitudinal), surface opaque, dulled by fine tessellation and scattered punctures. Wing venation as in nigrifrons. Tergal and sternal sculpturing as in fragilis. Pygidial plate as in fragilis.
VESTITURE. — In general as in fragilis but dorsal thoracic hairs ochraceous and tibial scopal hairs weakly plumose throughout.
MALE. MEASUREMENTS AND RATIOS: N = 20; length, 6.5-9.0 mm; width, 1.5-2.0 mm; wing length, M = 2.89 ± 0.190 mm; FL/FW, M = 1.01 ± 0.005; FS1/FS2, M = 1.97 ± 0.027.
INTEGUMENTAL COLOR. — As in female.
STRUCTURE. — Antennae as in fragilis but flagellar segment 1 about as long as segments 2 plus 3. Eyes each about three times as long as broad, inner margins parallel. Mandible and galea as in fragilis. Labial palpus as in fragilis but ratio about as 1.0:0.7:0.5:0.7. Maxillary palpus as in fragilis but ratio about as 1.0:1.0:0.9:0.7:0.6:0.8. Labrum and process as in fragilis. Clypeus as in fragilis but apical free margin shorter and with distinctly dish-shaped emargination and surface usually dulled by fine dense tessellation. Supraclypeal area, face above antennal fossae and vertex as in fragilis. Genal area as in fragilis but posterior carina often obsolete in lower half or more and surface dulled by fine reticular shagreening.
Thorax with sculpturing and form as in fragilis. Wing venation as in nigrifrons but no specimens seen with two submarginal cells.
Metasomal terga and sterna as in fragilis. Terminalia as in fragilis except as follows: penis valves with ventral lamellae about as broad as dorsal (no broader); sterna 7 and 8 as in figures 22-23.
VESTITURE. — As in fragilis.
REMARKS. — One female was examined which had two submarginal cells in both wings rather than the normal three. Presumably this character is variable in persimulata as it is in integra and nigrifrons but, due to the smaller number of specimens (especially males), we cannot determine to what degree this aberration occurs.
The single male from Wellsville, Utah, has a much shinier clypeus than is usual for this species. We believe it to belong to persimulata because of the shape of the clypeal emargination, but it is possible that this specimen belongs with the following, newly described species.
Reprinted with permission from: Mitchell, T.B. 1960. Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE — Length 9 mm.; clypeus broadly convex, projecting slightly less than half below suborbital line, rather dull and finely tessellate, punctures deep but rather fine, well separated medially, becoming somewhat closer and finer at extreme sides, without a distinct, median, impunctate line; facial foveae narrow, occupying above no more than half of space between eyes and ocelli (as in integra, fig. 49), covered with silvery tomentum; space between margin of vertex and lateral ocelli considerably less than their diameter; cheeks somewhat broader than eyes, rounded but obscurely subcarinate posteriorly, finely roughened, punctures exceedingly minute and obscure; malar space very short; basal segment of flagellum subequal to 2nd and 3rd combined; process of labrum almost as long as broad, slightly narrowed toward the truncate apex; pubescence of head, thorax, and legs pale ochraceous, more whitish on face and on thorax below; thoracic integument dull, tessellate, punctures of scutum shallow and rather obscure, quite close anteriorly, becoming rather sparse posteriorly, those on scutellum fine and irregular, surface much more shining; pleura subrugose above, densely tessellate below, conspicuously, angulately protuberant below, the venter a nearly straight line between these two protuberances; dorsal area of propodeum oblique, rather short, triangle rather coarsely rugose; propodeal corbicula well developed, pale ochraceous, with a quite distinct anterior fringe; trochanteral floccus long and well developed, pale ochraceous; hind tibiae slender and elongate, apex only slightly broader than basitarsi, scopal hairs rather dense, elongate, mostly simple, pale ochraceous, with some brownish, posterior hairs toward base; front and mid basitarsi rather slender, considerably narrower than their respective tibiae; wings pale yellowish, 2nd submarginal cell much shorter than 3rd, receiving 1st recurrent at apex; abdominal terga smooth and shining, basal tergum polished, with minute and very sparse but rather distinct punctures, punctures of 2nd and following terga fine and rather close, but hardly sparse, apical depressed areas rather shallow, occupying about one-third median length of discs, becoming narrowly yellowish-hyaline along rims, discal pubescence extremely short, thin and sparse, obscure, apparently whitish in general, terga 2-4 with quite dense, white, apical fasciae, that on tergum 2 narrowly interrupted, tergum 5 with a pale brownish, apical fimbria.
MALE — Length 7-8 mm.; breadth of face about equal to its median length, eyes about parallel; lateral ocelli separated from margin of vertex by a space slightly greater than their diameter; cheeks nearly twice as broad as eyes, posterior margin not conspicuously angulate, the upper portion of this strongly and conspicuously carinate, but this carina terminated opposite upper end of eye; clypeus very much broader than its median length, conspicuously long-pubescent, nearly hiding surface which is smooth but rather dull, with fine, well separated, shallow punctures, these somewhat closer at extreme lateral angles, apical margin very narrowly produced; malar space very short; process of labrum rather small, truncate, more or less shining, largely hidden by the overhanging clypeal margin; basal segment of flagellum about equal to segments 2 and 3 combined; mandibles slender and elongate, rather strongly flexed medially, the inner, subapical tooth extending slightly beyond the opposite apical angle of clypeal margin; pubescence of head and thorax entirely pale ochraceous, without dark intermixture, rather copious on clypeus, vertex, cheeks below, dorsum of thorax and pleura; scutum and scutellum smooth but rather dull, punctures very fine, shallow and obscure, well separated in general; pleura dull and tessellate beneath the copious pubescence, punctures hardly visible; propodeal triangle rather coarsely rugoso-striate, lateral areas of propodeum dull, finely subrugose, the propodeal corbicula rather well developed; legs piceous to black basally, the front tarsi apically and the entire mid and hind tarsi pale testaceous, pubescence entirely pale ochraceous; spurs pale testaceous; wings subhyaline, veins pale testaceous, stigma somewhat more brownish, 2nd submarginal cell very short, receiving 1st recurrent almost at apex; tegulae piceous; abdominal terga smooth and somewhat shining, punctures very minute but quite distinct, evenly distributed and rather sparse, apical impressed areas rather short and with hardly evident punctures, becoming somewhat yellowish-hyaline toward rims, discal pubescence short and erect, entirely pale, fasciae not evident; sternum 7 somewhat produced medially, this area rather narrowly and roundly emarginate, with considerable elongate, pale pubescence; apical portion of sternum 8 rather narrow and parallel-sided, the apex subtruncate, ventral surface with rather dense but short pale pubescence; penis valves rather broadly expanded toward base, the sides quite deeply excavated, tips not quite attaining tips of gonocoxites which are rather broadly expanded apically, this area markedly elongate, gonocoxal lobes strongly and rather narrowly produced.
DISTRIBUTION — Specimens have been seen from Massachusetts, Minnesota, Michigan and New York, collected in May; June and July.
FLOWER RECORDS — Recorded by Brittain and Newton on Cornus and Viburnum.